View full sizeAndrea Castillo/The OregonianWashington County authorities are investigating a crash that killed a 17-year-old boy this afternoon.

Maria Torrez saw the car hit the boy. As he fell, he struck his head first. Then the rest of his body hit the sidewalk, the 66-year-old said.

She ran to the boy, who was lying against a wooden fence, off Southwest 185th Avenue, across from her Aloha home. His legs, both twisted outward, seemed broken, she said. His eyes were open and he was taking slow, heavy breaths. There wasn't much blood.

Torrez said she was too scared to touch the boy, who was dressed in dark shorts and a blue shirt. So, she watched.

Minutes later police arrived and tried to resuscitate him, using a machine to shock him, she said. He didn't respond.

Young first struck McGregor, then two fences and finally a house, said Sgt. Bob Ray, a sheriff's office spokesman. She was taken to a local hospital for treatment.

McGregor was pronounced dead at the scene, according to fire officials.

The car reportedly caused minor structural damage to the home. No one inside was injured.

The crash completely closed 185th Avenue for more than three hours, while members of the Washington County Crash Analysis Reconstruction Team investigated. About 10 police cars remained at the scene late Tuesday afternoon. Black-and-yellow police tape stretched across the roadway.

Ray said investigators aren't sure what caused the crash.

Simeon Lopez ran outside after hearing commotion next door. He saw a car crashed into his neighbor's house, and the driver appeared to be having a seizure, the 33-year-old said.

When she was able to speak, the driver told Lopez that she had just gotten out of the hospital and couldn't feel her legs, he said. He looked down and saw that she was wearing a hospital bracelet. Then, help arrived.